Carriage
Removal
1.
Tilt the mast to vertical. Remove the forks
and load backrest. Disconnect any hydraulic
connections to the carriage. Remove the two
carriage stop bolts at the top of the inner rail.
2.
Connect a lifting device to the carriage. Use
the lifting device to raise the carriage so there
is slack in the free-lift chains.
WARNING
When disconnecting the lift chains, keep
control of the ends to prevent them from
falling and causing injury or damage.
3.
Remove the pin from each chain anchor at
the carriage. Disconnect the chains from the
carriage. Remove the chain sheaves and
hose sheave from the center cylinder. NOTE:
if the mast is to be disassembled, disconnect
the free lift chains at the inner rail middle
crossbar and remove them.
4.
Use the lifting device to raise the carriage out
of the top of the inner rail. Lower the carriage
to the floor so that it lays face down.
5.
If any of the load rollers must be replaced,
make a note of the number and location of
shims. See Checks and Adjustments for
correct adjustment of load rollers.
Replacement
CAUTION
The carriage bearings could fall off while
lifting the carriage above the mast.
1.
Install the load rollers and shims on the
carriage. Use a lifting device to raise the
carriage directly above the inner rail. Check
and adjust the clearance of the load rollers
(refer to Checks and Adjustments in this
section).
2.
Lower the carriage below the center cylinder
clevis head. Install the chain sheaves and
hose sheaves on the center cylinder clevis
head.
3.
Route the free-lift chains over the chain
sheaves and connect them to the chain
anchors on the carriage. Make sure the lift
chains are adjusted correctly as described in
Checks and Adjustments.
4.
Route auxiliary (sideshift) hoses over the hose
sheave on the center cylinder and connect
them to the carriage.
5.
Install the carriage stop bolts at the top of the
inner rail.
Mast
Removal
NOTE
If the mast must be disassembled, remove the
forks and carriage before removing the mast.
Make sure rails are completely lowered and
open the manual lowering valve to relieve
pressure in the hydraulic lines.
1.
Before removing the mast, check the length of
the lift chains to see if they need replacing
(refer to Cleaning and Inspection).
2.
Fully lower all of the rails and the carriage.
Use chains to fasten all the rails together and
connect a lifting device to the mast. Make
sure the chains will not damage the sheaves,
tubing, hoses, or other parts of the mast.
Make sure the lifting device has a capacity of
at least 2500 lb (1150kg).
3.
Put a drain pan under the area of the
hydraulic fittings. Disconnect the hydraulic
lines from the truck to the mast. Cap the
hydraulic lines from the truck.
E
lectric
C
ounterbalance
H
igh
O
utput
Elevating
3/10/00
7.5
FIGURE 7.6 - TILT CYLINDER
